C craigy Member Aug 14, 2010 #1 If on a prop boat a #17[prop.] screws forward 17 inches with each rev.What exactly do the numbers on these impellers mean.I think I have a good idea,but can someone define what this means[for a novice].:bigear:
If on a prop boat a #17[prop.] screws forward 17 inches with each rev.What exactly do the numbers on these impellers mean.I think I have a good idea,but can someone define what this means[for a novice].:bigear:
